- University of Illinois at Urbana-Champaign, University Library
Pictorial. Ownership. 62x104 mm. EX LIBRIS / WILLIAM O CHRISTENSEN. Silhouette of single-mast sailing ship [Viking?] with dragon masthead at sea.
- Rare Book and Manuscript Library, University of Illinois at Urbana-Champaign; For more information, please contact the Rare Book and Manuscript Library: https://illinois.edu/fb/sec/7016277